Noun
a viral disease of sheep and cattle that is transmitted by biting midges
Source: WordNetHe also created the first bluetongue vaccine, which was developed from an attenuated BTV strain. citation For many decades bluetongue was thought to be confined to Africa. Source: Internet
Signs and symptoms Infected sheep A domestic yak infected with bluetongue virus. Source: Internet
In cattle, constant changing of position of the feet gives bluetongue the nickname The Dancing Disease. citation Torsion of the neck ( opisthotonos or torticollis ) is observed in severely affected animals. Source: Internet